公开(公告)号：US08767911B2

公开(公告)日：2014-07-01

申请号：US13966606

申请日：2013-08-14

Applicant: Hologic, Inc.

Inventor： Baorui Ren ,  Andrew P Smith ,  Thomas Farbizio ,  Zhenxue Jing ,  Jay Stein

IPC: G01N23/083 ,  G21K1/02 ,  H05G1/52 ,  H05G1/02

CPC classification number: A61B6/06 ,  A61B6/025 ,  A61B6/03 ,  A61B6/035 ,  A61B6/502 ,  G21K1/02 ,  G21K1/04

Abstract: In a tomosynthesis system a static focal spot is moved in a direction opposite to and generally synchronized with the directional movement of an x-ray source and X-ray collimator blades are moved during each exposure in synchronization with the shifting of the static focal spot. The synchronized movement of the static focal spot, x-ray tube and collimator blades helps keep the effective focal spot fixed in space relative to the breast, detector or both during the entire duration of the exposure and keeps the x-ray field on the detector and breast static. The shifting collimator blades follow an oscillating pattern over the multiple x-ray exposures of a tomosynthesis scan.

Abstract translation: 在断层合成系统中，静态焦点沿着与X射线源的定向运动相反并且大体上与X射线源的定向运动相同的方向移动，并且与静态焦点的移动同步地在每次曝光期间移动X射线准直器叶片。 静态焦点，X射线管和准直器刀片的同步运动有助于在曝光的整个持续时间内将有效焦斑保持在相对于乳房，检测器或两者的空间中，并将X射线场保持在检测器 和乳房静电。 移位准直器刀片遵循断层扫描合成扫描的多次X射线曝光的振荡模式。